code: def package(self):
      bytes_data = io.BytesIO(b"Hello, world!")
      return util.create_package(
          file=bytes_data,
          path="some_path",
          contents=("a", "b", "c"),
      )
  
imports: import io
  import unittest
  from importlib import resources
  from importlib.resources._adapters import CompatibilityFiles, wrap_spec
  from .None import util
label_desc: Use image node_id 1 for calling the CompatibilityFilesTests obj's underlying member method code with example usage: obj.package() and returns: util